" Conservative price per barrel of oil: $50Proved reserves: 9.6...

" Conservative price per barrel of oil: $50
Proved reserves: 9.6 million barrels (annual report as at 30/6/22)
50 x 9.6 x 1,000,000 = 480,000,000 value of reserves "

Of those 9.6mmbls proved, only 2.677mmbls are producing.
2.784 PDBP would require workovers to bring online, and no guarantees they will flow as expected
4.132mmbls are PUD which would require drilling new wells, again, no guarantees of success.

Given the poor performance of several wells since that report, those reserves numbers could be revised down.